I think this may be the coolest thing I saw all week: CameraMail
On the 22nd of December 2004, Kyle Van Horn taped a disposablecamera to a piece of black foamcore and inscribed upon it thefollowing message: "ATTENTION POSTAL WORKERS! Please help us with ourproject. As this camera travels across the country we want photos of all whom it encounters. Please take a photo before you pass it along. Thank you!"
He then bordered it with attention-getting red tape and dropped it off at a post office in Baltimore, MD. A week later, it arrived at my home in Portland, OR with all 27 exposures taken. What follows in the extended entry is all 24 pictures that came out, in the order they were taken (3 of the 27 were blank.)